Development and Characterization of Wheat Husk Ash Reinforced Aluminium Matrix Composites for Lightweight Automotive Applications

ABSTRACT This research investigated the development and characterization of agro-waste reinforced aluminium matrix composites for light weight automotive application. The composite materials were synthesized by incorporating agro-waste derivative known as wheat husk ash into an aluminium matrix. Aluminium AA6061 was selected as the matrix material. Wheat husks was sourced from local wheat farmers. The wheat husks was washed and dried in sunlight for 2–3 days to remove moisture. The dried wheat husks was subjected to a temperature of 900°C for 3 hours to produce WHA. The WHA was pulverized and further subjected to a temperature of 1200°C for 2 hours to remove the carbonaceous material and other volatile components. The process also induced thermal stability. The particulates was pulverized and placed unto a set of sieves arranged in descending order of fineness and shaken for about 15 minutes which is the recommended time to achieve complete classification and uniform smoothness. Particulate size 106 microns (μm) was then selected. AA6061 alloy with predetermined composition was sourced from Tower Aluminum Nigeria Plc. The synthesis of the metal matrix composites was carried out by using the stir casting technique. The physical, mechanical, thermal and wear properties of the developed composites at varying compositions was ascertained. The stir casting technique was employed to synthesize the metal matrix composites, ensuring homogeneous distribution of the reinforcing particulates. A thorough evaluation of the developed composites' physical, mechanical, and wear properties was conducted at varying compositions, providing valuable insights into their potential for lightweight automotive applications. This research contributes to the development of sustainable, eco-friendly materials, and offers promising solutions for the automotive industry's increasing demand for lightweight, high-performance materials.